Ck the chargingrate at the posts. Should be between 13.6 to 14.2. This is assuming the battery was properly filled with acid and charge before placing into service. The lower the voltage, the higher the amps. 12.0 max charging, 14.2v no charging good luck

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You have a drain of power somewhere. Check all the earths that you can reach. Do you have a dodgy alarm that may have water in the connections, or a damp ignition switch. Use some WD40 to obtain better contacts.

Charge and load test the battery. If the battery sat dead for as little as two weeks , it could be sulfated and no good. If it is a Yuasa battery it only has a 6 month warranty , grab your receipt and race back to the dealer. They will charge and load test it three times . If it does not pass the load test you will get a new battery if it is still under warranty. Grab your voltmeter and unplug the plug with three yellow wires that is coming out of your stator. The three yellow wires coming from the stator should have continuity with each other and no continuity between any of the yellow wires and ground. That is the test for the stator. If the stator is good , the battery is good , then you probably have a bad regulator/rectifier. I suspect you just have a bad battery.

Sounds like you are not getting a charge from the alternator. You need to check battery voltage with a meter with the engine off, key off. Then again with it running, and the voltage should increase. If not, it's not charging.

Could be a bad regulator/rectifier. You need to check to see what the charging system is putting out at idle, and probably 6-7K RPM's. If you have anything above 14V, you most likely have a reg/rec problem. If not, look for a short in the wiring somewhere.

You never did say what kind of bike and engine size, the bigger the bike the more juice it requires....Charge your battery fully ...it should read almost 13 volts or more if it doesn't you have a defective or poorly prepared batt....this is not uncommon,that's why a voltage meter is so important for telling you what's really going on. Clean your ground wire from battery to frame and make sure your batt terminals are tight...if no go again,.take your batteryback to the store and have it LOAD tested i'll bet it won't pass the test...they can also test the voltage coming from the batt...but read that load test yourself.....you see ,your batterystarts w/ a jump but isn;t putting out enough power to start your bike on it;s own....folow this letter step thru step and you should be back on the road in no time.....Good Luck to you friend.....Tim

Check the charging rate of your bike, see if its system is charging, if it does charge thn theres somewhere the battery is getting drained out.
In order to see if tht is happenning, switch off everything and thn remove one battery wire on the battery, after doing so try to fix it back and notice if theres any sparks when it comes to the contact of the battery terminal , if so thn theres a drain somewhere in the electricals and wiring.